Backlash Adjsutment - Epson Stylus PHOTO 1270 Service Manual

EPSON Stylus Photo 870/1270

5.2.2 Backlash Adjsutment

This section describes Backlash Adjsutment that is to be made after
removing the PF motor. This adjustment provides an appropriate
=
backlash ( 0.1 mm or less) for PF motor pinion gear and the gear (76).
You need to make this adjustment when you replace any of the following
parts:
!
PF motor assembly
!
Gear 76
!
PF roller unit
Failure in making this adjustment causes the printer to
C A U T I O N
operate abnormally as described below:
!
If backlash is too little:
1. The PF motor dose not rotate correctly and paper
feeding accuracy declines.
2. Gear 76 and the PF pinion gear make abnormal
noises during printing.
!
If backlash is too large, the PF motor dose not rotate
correctly and paper feeding accuracy declines.
ADJUSTMENT
Before you begin, make sure the following parts are removed:
!
COMBINATION GEAR, 13.5, 30
!
TRAY, ABSORBER ASSEMBLY
!
HOUSING, PANEL, LEFT
!
HOUSING, REINFORCING, LEFT
See the following figure for locations.
HOUSING,
REINFORCING, LEFT
Figure 5-3. Parts to Remove
Be careful not to damage the PF Loop scale when
C A U T I O N
removing COMBINATION GEAR, 13.5, 30.
Adjustment
Revision B
COMBINATION
GEAR, 13.5,30
HOUSING, PANEL,
LEFT
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